
#include <iostream>
using namespace std;

class Test {
public:
	int a;
	int b;
public:
	Test(int a=0, int b=0) {
		this->a = a;
		this->b = b;
	}
	Test TestAdd(Test &t2) {
		Test tmp(this->a+t2.a,this->b+t2.b);
		return tmp;
	}
	
	
};
Test TestAdd(Test &t1,Test &t2) {
	Test t3;
	return t3;
}

void main() {
	Test t1(1, 2);
	Test t2(3, 4);
	Test t3 = t1.TestAdd(t2);
	cout << t3.a << ":" << t3.b << endl;
}